55568880 has 120 divisors (see below), whose sum is σ = 188545968. Its totient is φ = 14665728.

The previous prime is 55568879. The next prime is 55568893. The reversal of 55568880 is 8886555.

55568880 is a `hidden beast` number, since 5 + 5 + 568 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81019 + ... + 81701.

Almost surely, 2^55568880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55568880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94272984).

55568880 is an abundant number, since it is smaller than the sum of its proper divisors (132977088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55568880 is a wasteful number, since it uses less digits than its factorization.

55568880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The square root of 55568880 is about 7454.4537023178. The cubic root of 55568880 is about 381.6019171086.

The spelling of 55568880 in words is "fifty-five million, five hundred sixty-eight thousand, eight hundred eighty".